Sylvania 50370 QTP3x40TT5/277 PSN-B

Product Overview

Sylvania Quicktronic Professional QTP 3x40TT5/277 PSN-B — 2-3 Lamp FT40T5 Programmed Start Ballast, 277V, BF 0.88

The Sylvania Quicktronic Professional QTP 3x40TT5/277 PSN-B is a 2-3 lamp FT40T5 compact fluorescent electronic programmed start ballast from Sylvania, designed for FT40T5 compact fluorescent lamp systems on 277V circuits. Ballast factor 0.88 (normal), THD under 10%, Class A sound rating, ANSI C62.41 Cat. A transient protection, -20°F/-29°C minimum starting temperature (60°F/16°C with SS lamps), remote mounting up to 20 feet, parallel circuit, 70°C maximum case temperature, and UL Listed Class P / Type CC / Type 1 Outdoor. CSA Certified. No PCB. NEMA Premium. Verify lamp type, lamp count, and input voltage before ordering.

Lamp Count

2–3 Lamps

FT40T5

Input Voltage

277V

50/60Hz

Start Type

Programmed

Rapid Start

Ballast Factor

0.88

Normal Output

Min Start Temp

-20°F

-29°C

Technical Specifications

Brand	Sylvania
Series	Quicktronic Professional
Model	QTP 3x40TT5/277 PSN-B
Ballast Type	Electronic Programmed Rapid Start (PSN)
Lamp Count	2–3 Lamps
Compatible Lamp Type	FT40T5 Compact Fluorescent
Input Voltage	277V, 50/60Hz
Start Method	Programmed Rapid Start
Lamp Circuit	Parallel
Ballast Factor	0.88 (Normal)
Total Harmonic Distortion (THD)	<10%
Sound Rating	Class A
Minimum Starting Temperature	-20°F (-29°C); 60°F (16°C) with SS lamps
Maximum Case Temperature	70°C
Remote Mounting Distance	Up to 20 feet
Transient Protection	ANSI C62.41 Category A
Lampholder Note	Unused lampholder must be shorted per wiring diagram
PCB Content	No PCB
Listings / Compliance	UL Listed Class P, UL Type CC, UL Type 1 Outdoor, CSA Certified, NEMA Premium, ANSI C82.11, ANSI C62.41 Cat. A, FCC 47 CFR Part 18 (Non-Consumer)

Product Overview

The Sylvania Quicktronic Professional QTP 3x40TT5/277 PSN-B is a 277V programmed start ballast for 2-3 lamp FT40T5 compact fluorescent systems in commercial and institutional lighting. The 277V-only input is standard in commercial construction where branch circuits are wired at 277V from a 480/277V distribution system — this ballast is not compatible with 120V circuits. Confirm your circuit voltage is 277V before ordering.

Programmed rapid start preheats lamp cathodes before striking the arc, protecting filaments and extending lamp life in high-switching applications. Parallel lamp wiring keeps remaining lamps operating if one lamp fails. Remote mounting capability up to 20 feet supports architectural applications where the ballast must be positioned away from the lamp. When operating 2 lamps on a 3-lamp ballast, the unused lampholder must be shorted per the ballast wiring diagram — confirm this requirement with your electrical installer.

Compatible Lamps

(2–3) FT40T5 — T5 compact fluorescent flat lamp

Compatible Applications

Commercial FT40T5 fluorescent fixtures — 277V office, retail, and institutional luminaires using T5 flat compact fluorescent lamps.
High-switching applications — Programmed start extends lamp life in occupancy sensor-controlled environments.
Outdoor and cold-temperature applications — UL Type 1 Outdoor rated; -20°F cold start for covered exterior installations (standard lamps — 60°F minimum with SS lamps).
Remote-mount architectural applications — Up to 20-foot remote mounting for architectural luminaire designs.

Before Ordering — Verify

Input Voltage: This is a 277V ballast only — not compatible with 120V circuits. Confirm your branch circuit is 277V before ordering.
Lamp Type: Confirm your lamps are FT40T5 compact fluorescent flat lamps.
Lamp Count: Confirm fixture requires 2 or 3 lamps. When wiring for 2 lamps, unused lampholder must be shorted per wiring diagram.
Ballast Factor: This ballast has a 0.88 normal output ballast factor — lamps will operate at approximately 88% of rated lumens.
Minimum Starting Temperature: Standard cold start is -20°F; with SS (self-starting) lamps the minimum starting temperature is 60°F (16°C) — confirm lamp type for cold-temperature applications.